Jump to main content
Jump to site nav
Home
About us
Membership & professional community
Campaigning & outreach
Journals, books & databases
Teaching & learning
News & events
Locations & contacts
Home
About us
Web APIs
Help
Sign in
ChemSpider
Search and share chemistry
Simple
Structure
Advanced
History
Molecular Formula:
Define range intervals using parentheses.
E.g. C7H(10-14)O(0-4)
Molecular Weight:
to
±
(example: 123 ± 1)
min/max
+/-
Nominal Mass:
to
±
-2H+
-H+
+H+
+2H+
min/max
+/-
Average Mass:
to
±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Monoisotopic Mass:
to
±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Search
Search Hits Limit:
100
1000
10000
Filter
Single/Multi-component
Search Any
Search Single-Component Structures Only
Search Multi-Component Structures Only
Isotopically Labeled
Search Any
Search Isotopically Labeled Structures Only
Disregard Isotopically Labeled Structures
Additional Filters
Filter only those having analytical data
Found 5048 results
Search term:
MF = 'C_{21}H_{19}N_{3}O_{3}S'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
2094
zoom
C
21
H
19
N
3
O
3
S
393.4589
110
826
730
10
8008415
zoom
C
21
H
19
N
3
O
3
S
393.4589
41
40
0
0
936941
zoom
C
21
H
19
N
3
O
3
S
393.4589
37
27
0
0
2153414
- 0/1 defined
zoom
C
21
H
19
N
3
O
3
S
393.45886
30
16
0
0
976333
zoom
C
21
H
19
N
3
O
3
S
393.4589
29
16
0
0
2394714
- 0/1 defined
zoom
C
21
H
19
N
3
O
3
S
393.45886
27
16
0
0
2967996
zoom
C
21
H
19
N
3
O
3
S
393.45886
26
14
0
0
4053030
zoom
C
21
H
19
N
3
O
3
S
393.45886
26
14
0
0
2168534
- 0/1 defined
zoom
C
21
H
19
N
3
O
3
S
393.45886
26
15
0
0
2068884
- 0/1 defined
zoom
C
21
H
19
N
3
O
3
S
393.45886
26
20
0
0
1080214
zoom
C
21
H
19
N
3
O
3
S
393.4589
26
17
0
0
1176496
zoom
C
21
H
19
N
3
O
3
S
393.4589
26
13
0
0
947533
zoom
C
21
H
19
N
3
O
3
S
393.4589
25
13
0
0
916801
zoom
C
21
H
19
N
3
O
3
S
393.4589
25
21
0
0
1654158
zoom
C
21
H
19
N
3
O
3
S
393.4589
25
16
0
0
2185332
- 0/1 defined
zoom
C
21
H
19
N
3
O
3
S
393.45886
25
16
0
0
936066
zoom
C
21
H
19
N
3
O
3
S
393.4589
24
12
0
0
1288698
zoom
C
21
H
19
N
3
O
3
S
393.4589
24
12
0
0
2182044
- 0/1 defined
zoom
C
21
H
19
N
3
O
3
S
393.45886
23
15
0
0
2787625
zoom
C
21
H
19
N
3
O
3
S
393.45886
23
24
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement